I don't know where those deagel.com predictions came from and linking to the site provides no explanation as to what would be the cause of such large population declines.

In countries like Australia (where I'm from) or the USA breakdown of supply chains and supply of diesel could cause mass starvation.

But in Israel where I live, farms are all within (long) walking distance from population centers and there is self sufficiency in most food areas.
Israeli society is very cohesive (especially under threat) so scenarios of societal breakdown are not relevant.

Also Israel's population is the by far the fastest growing of any first world country and is about to top 10M.

What is quite clear is that US and European civilisation is on the brink. But that does not apply across the board.